JPS5273659A - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
JPS5273659A
JPS5273659A JP50150407A JP15040775A JPS5273659A JP S5273659 A JPS5273659 A JP S5273659A JP 50150407 A JP50150407 A JP 50150407A JP 15040775 A JP15040775 A JP 15040775A JP S5273659 A JPS5273659 A JP S5273659A
Authority
JP
Japan
Prior art keywords
frequency synthesizer
frequency
signal
secure
voltage control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP50150407A
Other languages
Japanese (ja)
Inventor
Shigehiko Ikeguchi
Akira Usui
Norio Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP50150407A priority Critical patent/JPS5273659A/en
Priority to US05/746,707 priority patent/US4149125A/en
Priority to CA267,016A priority patent/CA1106087A/en
Publication of JPS5273659A publication Critical patent/JPS5273659A/en
Priority to US05/938,829 priority patent/US4153884A/en
Priority to CA360,327A priority patent/CA1106925A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/191—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using at least two different signals from the frequency divider or the counter for determining the time difference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels

Abstract

PURPOSE: To secure a large number of oscillation frequency signal with limited number of crystal oscillator by obtaining controlled signal featuring frequency similar to reference signal which contains reference frequency from voltage control oscillator through program counter.
COPYRIGHT: (C)1977,JPO&Japio
JP50150407A 1975-12-16 1975-12-16 Frequency synthesizer Pending JPS5273659A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP50150407A JPS5273659A (en) 1975-12-16 1975-12-16 Frequency synthesizer
US05/746,707 US4149125A (en) 1975-12-16 1976-12-02 Frequency synthesizer for transmitter receiver using a phase locked loop
CA267,016A CA1106087A (en) 1975-12-16 1976-12-02 Frequency synthesizer for transmitter/receiver
US05/938,829 US4153884A (en) 1975-12-16 1978-09-01 Frequency synthesizer for transmitter/receiver using a phase locked loop
CA360,327A CA1106925A (en) 1975-12-16 1980-09-16 Frequency synthesizer for transmitter/receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50150407A JPS5273659A (en) 1975-12-16 1975-12-16 Frequency synthesizer

Publications (1)

Publication Number Publication Date
JPS5273659A true JPS5273659A (en) 1977-06-20

Family

ID=15496276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50150407A Pending JPS5273659A (en) 1975-12-16 1975-12-16 Frequency synthesizer

Country Status (2)

Country Link
US (1) US4149125A (en)
JP (1) JPS5273659A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5482152A (en) * 1977-12-14 1979-06-30 Kanda Tsushin Kogyo Kk Highly stable frequency synthesizer
JPS55115098A (en) * 1979-02-27 1980-09-04 Nippon Musical Instruments Mfg Clock signal generator for electronic musical instrument

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247951A (en) * 1978-10-31 1981-01-27 Micro Power Systems, Inc. Frequency synthesizer with unauthorized frequency inhibiting means
US4388597A (en) * 1980-06-03 1983-06-14 Motorola Inc. Frequency synthesizer having plural phase locked loops
DE3170205D1 (en) * 1981-12-10 1985-05-30 Itt Ind Gmbh Deutsche Digital phase/frequency control circuit
BR8606817A (en) * 1985-08-08 1987-10-13 Network Stallite Paging Partne EXPLORATION RECEIVER FOR RADIO PAGINATION FOR PAGINATION SYSTEM
US5247700A (en) * 1990-11-16 1993-09-21 Universal Cellular, Inc. Cellular telephone with pager
DE19747735C2 (en) * 1997-10-29 2003-04-30 Infineon Technologies Ag Frequency synthesizer for a mobile radio terminal
US9288784B2 (en) * 2012-05-18 2016-03-15 Bose Corporation Controlling communication mode changes in a communication system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854102A (en) * 1973-08-09 1974-12-10 Itt Multiple frequency band frequency synthesizer
US3944925A (en) * 1974-08-05 1976-03-16 Motorola, Inc. Phase-locked loop transceiver having automatic frequency offset selectability
US3983484A (en) * 1974-12-06 1976-09-28 Nihon Dengyo Co., Ltd. Multichannel signal transmitting and receiving apparatus
US4002995A (en) * 1975-07-07 1977-01-11 Motorola, Inc. Digital frequency synthesizer having selectable frequency offset between transmit and receive frequencies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5482152A (en) * 1977-12-14 1979-06-30 Kanda Tsushin Kogyo Kk Highly stable frequency synthesizer
JPS55115098A (en) * 1979-02-27 1980-09-04 Nippon Musical Instruments Mfg Clock signal generator for electronic musical instrument

Also Published As

Publication number Publication date
US4149125A (en) 1979-04-10

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